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madreJ [45]
3 years ago
12

Which of the following statements is true? A thin layer of chyme protects the lining of the digestive tract from being broken do

wn by enzymes. Hydrochloric acid (HCl) begins the partial digestion of fats in the small intestine. Cystic fibrosis is an infectious disease that causes the muscles that control swallowing to malfunction. Heartburn often results when the gastroesophageal sphincter fails to close properly.
Biology
1 answer:
zheka24 [161]3 years ago
6 0

The correct answer is: Heartburn often results when the gastroesophageal sphincter fails to close properly.

The gastroesophageal sphincter is a muscle located at the bottom of the esophagus that has to be relaxed in order to allow food to flow down into the stomach. After it contracts (tightens), the food and the stomach acid can’t flow back up into the esophagus.

When the gastroesophageal sphincter fails to close properly acid reflux occurs and causes the heartburn.

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Mendel discovered that the allele for green seed pods (G) is dominant to the allele for yellow seed pods (g). He crossed true-br
finlep [7]

Answer:

GG, Gg, Gg, gg

Homozygous green – GG

Heterozygous green – Gg

Homozygous yellow - gg

Explanation:

It is given that allele for green seed pods (G) is dominant to the allele for yellow seed pods (g) which means that if “G” and “g” occur together, a trait associated with G will be expressed.  

The genotype of the true breeding Green plant is “GG”  

The genotype of the true-breeding yellow plant is “gg”  

F1 generation cross  

GG * gg

Offspring produced from F1 generation are – Gg, Gg, Gg, Gg

In f2 generation offspring of F1 generation are crossed among each other.  

So the offspring produced in F2 generation are  

Gg * Gg

GG, Gg, Gg, gg

Homozygous green – GG

Heterozygous green – Gg

Homozygous yellow - gg

8 0
3 years ago
Some substances are transported within the cell or across membranes with membranous sacs what are these structures called?
ZanzabumX [31]

Answer:

Vesicle

Explanation:

A vesicle is a spherical organelle of a cell that looks like a sac. A vesicle is the main transportation organelle that allow the cell to move things inside cytosols such as enzyme, food, or waste material. When vesicle carrying enzyme, its often called lysosomes. A vesicle can also remove waste material outside the cell, or taking food from outside of the cell membrane.

5 0
3 years ago
on the outside of the plants plasma membrane act as signals or markers to help cells recognize one another
sweet-ann [11.9K]
Cell Wall. The Cell Wall is a protective cover around the plant cell.
3 0
3 years ago
Which of these is an example of a biotic factor that affects plant growth?
kramer

Answer:  A

Bio means life

5 0
4 years ago
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Q9: Human females can pass on either one of the their two X chromosomes to an offspring, but a dad
gayaneshka [121]

Answer:

yes a child inherits 50% of their DNA from mom and 50% from dad

Explanation:

Males are heterogametic as they produce two types of gametes one carrying an X and the other carrying Y chromosome. Females are homogametic because they produce one type of gamete carrying the X chromosomes. The chromosomes are inherited equally in the mendelian fashion. Genes on the chromosomes are therefore inherited equally with 50% coming from the mother and 50% coming from the father.

3 0
3 years ago
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